Back Stairways

A young man named Kijima who works as a pianist in a small bar is surprised when one of the customers asks if he wont pretend to be the fiance of his sister He is even more surprised when he is offered a million yen to play this apparently harmless role Actually it is anything but harmless Both the customer and his sister are involved in a jewel robbery in which they have doublecrossed two of their accomplices who are now out of prison and thirsting for revenge